¿ªÔÆÌåÓý

Date
Re: Nicely drafted BITX schematics.
Very nice job, Eternal Squire! I have converted these to GIF format... you can grab them all from http://www.ham-stuff.net/w5rcm/BITX/ -- 72, Ron - W5RCM / ZS1MCD Austin TX / Hermanus ZA
By Ron McDowell - W5RCM / ZS1MCD <w5rcm@...> · #983 ·
Re: New to group and Query
Hello, I have it on paper and in the chassis. It's still pending getting it to an electronic form. Basic design isa fairly stock PI form and uses 4 diodes to attain about 40-45db of attenuation.
By ajparent1 <kb1gmx@...> · #982 ·
Re: Nicely drafted BITX schematics.
Hello, Is it possible to make those Word bitmap files intosomething like HTML or other more portable format? Reason? I do not use Word and do not have it. Allison KB1GMX wrote:
By ajparent1 <kb1gmx@...> · #981 ·
Re: New to group and Query
Did I miss this attenuator? I am interrested to see the schematic (and if someone build it, the results). Thanks, Chris.
By Chris van den Berg · #980 ·
New file uploaded to BITX20
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /BITX 20 V1,2&3 /Ver3 PCB ddouble sided/dimenV3.pdf
By BITX20@... · #979 ·
Double sided layout for Ver3
Hi! Few friends have shown interest in making a double sided board for BITX with top layer unetched and acting earth plane. I have uploaded the artwork files to make it easy for them. Missing hole
By vu3wjm <vu3wjm@...> · #978 ·
New file uploaded to BITX20
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /BITX 20 V1,2&3 /Ver3 PCB ddouble sided/xray
By BITX20@... · #977 ·
Re: New to group and Query
Hi! It would be a simple matter to upload the interconnection traces only less the earth plane. I will simply reamove the earth plane from V3 layout. Friends wishing to use a double sided board
By Rahul Srivastava <vu3wjm@...> · #976 ·
Nicely drafted BITX schematics.
All, I'm starting to need reading spectacles, so I took the liberty of redrafting the schematic submitted by Mr. Farhan into a series of modular documents that should take somewhat less effort to
By eternalesquire <eternalsquire@...> · #975 ·
Re: New to group and Query
--- In BITX20@..., "bambazonke01" <jimandruth@s...> wrote: Hi, Inline comments. > --- > Hi Allison, > I'd never thought of WWV being a problem in this respect in North > America. You
By ajparent1 <kb1gmx@...> · #974 ·
New file uploaded to BITX20
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /KB1GMX/Plldesign.pdf Uploaded by : ajparent1
By BITX20@... · #973 ·
Re: New to group and Query
--- Hi Allison, I'd never thought of WWV being a problem in this respect in North America. You are right.It would be annoying to hear that Tick -tick all the time. I will have to consider some
By bambazonke01 <jimandruth@...> · #972 ·
Re: New to group and Query
Hello, Comments are inserted inline. I prefer a two sided board where the component side has no traces only clearance holes for non grounded components and holes that are not clearanced so
By ajparent1 <kb1gmx@...> · #971 ·
Re: New to group and Query
Most of this V3 board is IF and BFO and as such is well shielded by the prolific ground plane on it's single side.I like this type of layout as it avoids a lot of ground loop problems. To get up to
By bambazonke01 <jimandruth@...> · #970 ·
Re: New to group and Query
Hi, It's size and the lack of two sides (top ground plane) make it less than useful for my 6m project. I'm saving it for something else. I mentioned it so others may know that FAR has it. Myself
By ajparent1 <kb1gmx@...> · #969 ·
I found these in my junk box
Hi The last time this item surfaced, I was selling it for a dollar a foot. I think I can do that again. It's a reel of 20 pF NP0 disc capacitors on paper tape, with 1 inch leads, 24 per foot.
By Jim Strohm <jstrohm@...> · #968 ·
Re: New to group and Query
Thanks Rahul Jim VE3DDY higher gain and lower NF. So the pin out is B-E-C which is different from other transistors. C-B-E L-R for other devices. For 2SC2570 you cab also substitute BFR90.91,96 or
By bambazonke01 <jimandruth@...> · #967 ·
Re: New to group and Query
Hi! For those going in for ver3 board , I once again repeat the mods. 1) Q1 I have used 2SC2570A a high ft cable TV transistor for higher gain and lower NF. So the pin out is B-E-C which is
By Rahul Srivastava <vu3wjm@...> · #966 ·
Re: New to group and Query
The Far circuits boards are away too big for my application so I'm strongly considering a run of the CCA design by VU3WJM (Rahul). This board design is 6.5 X 4.25 inches and will fit nicely inside
By bambazonke01 <jimandruth@...> · #965 ·
Re: New to group and Query
Hello, This may not be of help to everyone but for North Americans it would be handy to know. FAR circuits www.farcircuits.net They have the the BIT-X board as drawn by the creator. The one I
By ajparent1 <kb1gmx@...> · #964 ·